1. In May, 1915, the 1st Bavarian Reserve Division was engaged at Neuville-St. Vaast, when it was reinforced by two battalions of the 99th Reserve Infantry Regiment. The 2d Bavarian Reserve Regiment suffered casualties of 14 officers and 1,413 men (casualty list).
Le Labyrinthe.
2. In June the division fought at the Labyrinth.
3. It continued to hold the sector north of the Scarpe, but moved toward the south in December, the front of the 1st Bavarian Reserve Corps extending as far as Blaireville.
1916.
1. The division remained in line east of Arras, straddling the Scarpe until August, 1916. From May to August, it comprised the 12th Bavarian Reserve Regiment, instead of the 3d Bavarian Reserve Regiment, loaned temporarily by the 5th Bavarian Reserve Division.
Somme.
2. Withdrawn August 8, it went to the Somme. It was engaged the 12th in the Clery sector, and was relieved as early as the 15th by the 1st Guard Division after having suffered heavily.
3. The second fortnight in August the division was at rest near Cambrai. The end of that month and early in September, some elements of the division were engaged near Clery and Martinpuich in order to facilitate reliefs.